Concrete building form



Patented June 23, 1953 I CONCRETE BUILDING soaMf i J ;B; Johnston, deceased, late of FortiWorth Tex.,

This invention relates to concrete building have found favor in the trade because, they are reusable, and because they 'save time 'as'compared with making and erecting conventional wooden concrete forms.

An object of the invention is to provide a construction and arrangement whereby panels of the described class may be quickly assembled and disassembled.

Another object of the invention is to provide a holding means for the assembled panels whereby little, if any, whaling will be required to resist the lateral forces of the wet concrete against the inner surfaces of the assembled walls,

Generally, the invention is comprised of an arrangement of fiat bars detachably secured to the edges of and between the panels, and which bars are arranged perpendicularly to each other and having the end of any one bar located intermediate the ends of an adjacent perpendicular bar.

The invention will be more readily understood Figure 2 is an exploded schematic view of the panel and bar arrangement, and particularly showing the relative positions of the stiffener bars with respect to each other.

Figure 3 is a perspective view of one of the panels and showing the locations of holes in the panel flanges for receiving the pins which project from the stiffener bars.

Figure 4 is a broken elevation illustrating a suggested means for tying the opposing walls of a concrete form when the latter embraces a relatively large area.

In the exemplary form of the invention illustrated in the accompanying drawings, the concrete form, generally designated by the numeral I0, is comprised of opposing spaced walls II and I2, formed by separate assemblies of square panels I3 having flanges I4 therearound. When assembling the form I0, the surfaces I5 of the respective panels are positioned opposite each other so as to provide relatively smooth and uniform wall surfaces.

The panels I3 in the respective walls I I and by 1 1 Mac Johnston, executrix,.' Fo1ft aring V u I Application March 3,195 0, Ser ialNo,:147,5 5 2.' "4'Claims. (o1. 2 5'-'-13 1. ,j' e

. I 2.;are. detachably'secured .to each other by means .of flat sti-ffener bars I6, each of which issubstantially as long as the width of two or more said panelsin;side-by-siderelation. :The bars 16 are arran edperpendicular tofeach other in the manner illustrated in Figure 2 and are provided with projecting pins I1 for engagement in corresponding slip fit holes I8 in all four sides of each panel flange I 5. Preferably, each side of each flange I4 is provided with at least two holes I8, and each opposing flat surface of each bar Is is provided with four projecting removable pins I"! so as to make the adjacent panels rigid with each other. It will be noted in Figure 2 that half bars I 9 may be used at the ends of the assembled wall where such bars fit between a perpendicular adjacent bar I6 and the wall end.

When desired, half panels 20 may be installed along the bottom or top of either wall II or I2, or may be positioned in the assembled walls I I and I2 so as to vary the wall heights and widths. Similarly, the half panels 20 may also be employed opposite each other to accommodate window and door opening forms (not shown) when half panel dimensions are desired. Such window or door opening forms are cased in the usual manner for retaining the concrete therearound, and since this practice is conventional, it is not,

therefore, shown in detail.

When the walls II and I2 are relatively large in area, tie wires 2| may be secured around bars I6 1n the opposing walls I I and I2 and between corners of panels I3. 1

It will be obvious to those versed in the art that the foregoing panel or stiffener bar arrangement may be quickly assembled by arrangmg the panels I3 in rows, one upon the other, and with the stiffener bars I6 positioned between the panel flanges I4. The projecting pins I6 are engaged in the openings I4, and by reason of the truss effect of the respective bars upon adjacent panels I3, the entire walls I I and I2 will resist the pressure of the concrete poured between the same. However, when the wall areas are relatively large, the .described tie wires 2|, or similar means, may be employed for resisting such pressure.

The described form of the invention is not restrictive, but may be made in many ways w1thin the scope of the appended claims.

What is claimed is:

1. In a concrete form the combination arranged in horizontal and vertical I'OWifi/Zlififfi and horizontal flat stiffener bars detachably secured to and between the edges of adjacent said I8 in the panel flanges panels, said bars being substantially as long as two or more said panel sides, said bars being arranged perpendicularly with respect to each other with the ends of certain of said horizontal bars located intermediate the ends of adjacent said vertical bars.

2. In a concrete building form, panels arranged in horizontal and vertical rows, vertical and horizontal stiffener bars positioned between the edges of adjacent said panels, pins projecting from said bars and received within openings in the edges of said panels, said bars being substantially as long as two or more said panel sides, 7

said bars being arranged perpendicularly with respect to each other with the ends of certain of said horizontal bars being located intermediate the ends of adjacent said vertical-bars." A

3. In a concrete form, the combination of panels having flanges therearound, said panels being arranged in horizontal and vertical rows,

vertical and horizontal flat stiffener bars positioned between said flanges, means detachably securing said bars in their referred to positions,

other with the ends of certain of said vertical bars "located intermediate the ends of adjacent said horizontal bars.

IDA MAE JOHNSTON.

1 Executriir of the zajstwtzz and testament Of J. B.

- References Cited in the file of this patent said bars being arranged perpendicularly with respect to each other and with the ends of certain Johnston, deceased.

UNITED STATES PATENTS Number Name Date 1,047,254 Leiter Dec. 17, 1912 1,250,032 Schub D60. 11., 1917 FOREIGN PATENTS Number Country Date 7 420,309 Great Britain Nov. 29, 1934 

